期刊
LASER PHYSICS
卷 22, 期 1, 页码 327-330出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1054660X12010227
关键词
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资金
- National Natural Science Foundation of China [60977055]
- Ministry of Education of China [NCET-09-0255, DUT11ZD102]
- Liaoning Province [042031/36]
- Dialysis center within the First Affiliated Hospital of Dalian Medical University, Dalian
A photoacoustic (PA) spectrometer based on a near-IR tunable fiber laser is developed and used for breath ammonia analysis. We successfully measured the breath ammonia level variation of six patients with end-stage renal disease while they were undergoing hemodialysis in the hospital. The measurement results showed that the initial concentration level of the breath ammonia were from 1600 to 2200 ppb before dialysis treatment, the levels decreased to 200-600 ppb in the end stage of dialysis, which close to the levels of healthy persons. Further improvement and applications of this PA spectrometer are discussed.
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